A reasercher asks if study time in hours predicts test performance (0-100) she asked students to report study time prior to giving a exam she obtained the following data Standard deviation : 11 Correlation between study time and test performance : 0.50Compute the standard error estimate using formula above

What do you conclude about predicting test performance with study time? Is it an improvement over predicting test scores with the mean test score? Why or why not? A